.middle{
    flex: 1;
    position: relative;
    background-color: white;
    display: flex;
    flex-direction: column;
    .nav{
        img{
            display: block;
            width: 33.33%;
            float: left;

        }
    }
    .p-list{
        display: flex;
        flex-wrap: wrap;
        margin-top: 20px;
        padding: 0 10px;
        justify-content: space-between;
       
        .pro{
            width: 48%;
            text-align: center;
            border: 1px solid #cccccc;
            padding-top: 20px;
            padding-bottom: 10px;
            margin-top: 10px;

            a{
                img{
                    width: 130px;
                    height: 130px;
                }
                p{
                    text-align: left;
                }
            }
        }
    }

}